Space was once a distant dream for African nations like Senegal.But that is changing fast.Today,space is emerging as a strategic frontier for the continent,with 22 countries including Senegal now operating national sp...Space was once a distant dream for African nations like Senegal.But that is changing fast.Today,space is emerging as a strategic frontier for the continent,with 22 countries including Senegal now operating national space agencies.Senegal launched its own agency,the Senegalese Space Study Agency(ASES),in March 2023.The recent inauguration of the African Space Agency’s headquarters in Cairo,Egypt,marks a new chapter in Africa’s rising ambitions beyond Earth.Tasked with coordinating national programmes,the agency seeks to drive economic and social development through space technologies while promoting scientific cooperation both within Africa and internationally.展开更多
For China,at the turn of the century,how to keep the position of the space power,how to stimulate the enthusiasm of the space technicians and how to keep pace with the world space technology,all of these questions lie...For China,at the turn of the century,how to keep the position of the space power,how to stimulate the enthusiasm of the space technicians and how to keep pace with the world space technology,all of these questions lie ahead of the Chinese people.So we may say China’s space industry now is in the key stage.If the space industry draws great attention from the central government and the people of the country,it will have a brilliant future in the 21st century.We should put our eyes on the 21st century and prepare to explore space resources.It is difficult for us to keep pace with the times if we do not explore space resources and try to earn "the money in space".展开更多
The core module of China’s Space Station(CSS)is scheduled to be launched around the end of 2020,and the experimental module I and II will be launched in the next two years.After on-orbit constructions,CSS will be tra...The core module of China’s Space Station(CSS)is scheduled to be launched around the end of 2020,and the experimental module I and II will be launched in the next two years.After on-orbit constructions,CSS will be transferred into an operation period over 10 years(2022–2032 and beyond)to continuously implement space science missions.At present,based on the project selection and research work in the ground development period of CSS,China is systematically making a utilization mission planning for the operation period,which focuses on the fields of aerospace medicine and human research,space life science and biotechnology,microgravity fluid physics,combustion science,materials science,fundamental physics,space astronomy and astrophysics,Earth science,space physics and space environment,space application technology,etc.In combination with the latest development trend of space science and technology,China will continue to update planning for science research and technology development,carry out project cultivation,payload R&D,and upgrade onboard and ground experiment supporting systems to achieve greater comprehensive benefits in science,technology,economy,and society。展开更多
China scheduled to complete the assembly of the T-shaped Tiangong Space Station in 2022,and will enter a new stage of utilization.There are more than 20 experiment racks inside the modules,and more than 50 external on...China scheduled to complete the assembly of the T-shaped Tiangong Space Station in 2022,and will enter a new stage of utilization.There are more than 20 experiment racks inside the modules,and more than 50 external onboard payloads mounting spaces,which will support large-scale science and technology experiments during the operation.The development of internal experiment racks and external research accommodations approved during the construction has been completed,of which 4 racks in Tianhe core module,including High Microgravity Level research Rack(HMLR)and Container-less Materials Processing Rack(CMPR),have finished on-orbit tests;while other racks in Wentian and Mengtian experiment modules are under comprehensive ground tests.The Chinese Space Survey Telescope(CSST)has advanced much in the last two years with 24 pre-launch research projects funded and 4 joint science center built in preparation for CSST’s future scientific observations and operations.The systematic research planning for China’s Space Station(CSS)during 2022-2032 is updated with the researches classified into four important areas:space life sciences and human research,microgravity physical sciences,space astronomy and Earth science,and new space technologies and applications.According to the planning,more than 1000 experiments are expected to perform in CSS during the operating period.Overall,the CSS utilization missions are proceeding as planned,which will contribute to the major scientific or application output and have a positive impact on the quality of life on Earth.展开更多
In 1993, China Aerospace Corporation(CASC) announced that it would give priority to the development of satellites and their applications, automobiles and components, computers and their applications, and regard them a...In 1993, China Aerospace Corporation(CASC) announced that it would give priority to the development of satellites and their applications, automobiles and components, computers and their applications, and regard them as its three-pillar industries, which was "a historic and significant strategic decision" said Mr. Liu Jiyuan, the president of CASC. New and展开更多
Now the China National Astronau-tics Industry Corporation is devcting more efforts to narrowing the gaps and has also begun research into manned satellites,which it hopes will be real-ized by the end of this century.
Entering into the 1990s, Chinese scientists have made mice, drosophila and silkworm eggs experiments in space with satellites and achieved remarkable results. These animals were put in space environment units with the...Entering into the 1990s, Chinese scientists have made mice, drosophila and silkworm eggs experiments in space with satellites and achieved remarkable results. These animals were put in space environment units with the ability of adjusting pressure, temperature and moisture control, air conditioning and purifying as well as foods and water supply. After 8-days’ flight, all performance parameters were normal and met the design requirements. The two mice kept alive for 5 days and 10 hours展开更多
China’s space cause is based on the development of missile technology. In the 1950s, new China, which was just founded, decided to keep pace with the jet technology times, to begin developing missile and rocket scien...China’s space cause is based on the development of missile technology. In the 1950s, new China, which was just founded, decided to keep pace with the jet technology times, to begin developing missile and rocket science and technology, and to establish China’s new space scientific and technological industry.展开更多
U_(S)-admitting spaces,which were introduced by Heckmann,enjoy many nice properties similar to those of the extensively studied well-filtered spaces.In this paper,we present a direct construction of the U_(S)-admittin...U_(S)-admitting spaces,which were introduced by Heckmann,enjoy many nice properties similar to those of the extensively studied well-filtered spaces.In this paper,we present a direct construction of the U_(S)-admitting reflections by using U_(S)-admitting determined sets.展开更多
The family of spaces F(p,q,s)was introduced by the author in 1996.Since then,there has been great development in the theory of these spaces,due to the fact that these spaces include many classical function spaces,and ...The family of spaces F(p,q,s)was introduced by the author in 1996.Since then,there has been great development in the theory of these spaces,due to the fact that these spaces include many classical function spaces,and have connections with many other areas of mathematics.In this survey we present some basic properties and recent results on F(p,q,s)spaces.展开更多
With the development of China’s crewed space mission,the space radiation risk for astronauts is increasingly prominent.This paper describes a simulation of the radiation doses experienced by a Chinese female voxel ph...With the development of China’s crewed space mission,the space radiation risk for astronauts is increasingly prominent.This paper describes a simulation of the radiation doses experienced by a Chinese female voxel phantom on board the Chinese Space Station(CSS)performed using the Monte Carlo N-Particle(MCNP)software.The absorbed dose,equivalent dose,and effective dose experienced by the voxel phantom and its critical organs are discussed for different levels of shielding of the Tianhe core module.The risk of space-radiation exposure is then assessed by comparing these doses with the current risk limits in China(the skin dose limit for short-term low-earth-orbit missions)and the NASA figures(National Council on Radiation Protection and Measurements Report No.98)for female astronauts.The results obtained can be used to guide and optimize the radiation protection provided for manned space missions.展开更多
We demonstrate the transmission of 2.5-Gb/s WDM signals spaced at 5 GHz over 480 km of single-mode fiber. The results indicate that it should be possible to transmit more than one thousand 2.5-Gb/s channels spaced at ...We demonstrate the transmission of 2.5-Gb/s WDM signals spaced at 5 GHz over 480 km of single-mode fiber. The results indicate that it should be possible to transmit more than one thousand 2.5-Gb/s channels spaced at 5 GHz over long distance.展开更多
October 8, 1956 An institute on missile and rocket research is set up, the first of the country. July 19,1964 A biological rocket carrying albino rats is
China＇s space industry has been developed quickly and consistently setting new records for mankind in space exploration in the past 60 years. Four principles are uphetd during its development. Systems engineering and...China＇s space industry has been developed quickly and consistently setting new records for mankind in space exploration in the past 60 years. Four principles are uphetd during its development. Systems engineering and overall thinking have played an important role in the development of China＇s space industry. What＇s more, the concept of systems engineering which originated from the space industry, being rooted in society, is a successful example of ＂Chinese theory＂ answering ＂Chinese question＂ and ＂Chinese wisdom＂ guiding ＂Chinese development＂, which is a trump card for the country and provides a unique business governance mode with Chinese characteristics.展开更多
Services: Professional deep treatment of men's faces Treating men's "beer bellies" Spa hydrotherapy Brand new French Darphin top-class aromatherapy Spa herbal massage Treatment for men's reproduc...Services: Professional deep treatment of men's faces Treating men's "beer bellies" Spa hydrotherapy Brand new French Darphin top-class aromatherapy Spa herbal massage Treatment for men's reproductive展开更多
Services: Professional deep treatment of men's laces Treating men's "heer bellies" Spa hydrotherapy Brand-new French Darphin top-class aromatherapy Spa herbal massage Treatment for men's reproduc...Services: Professional deep treatment of men's laces Treating men's "heer bellies" Spa hydrotherapy Brand-new French Darphin top-class aromatherapy Spa herbal massage Treatment for men's reproductive展开更多
LetΩ be a bounded symmetric domain in Cn. The purpose of this article is to define and characterize the general function space F（p, q, s） on Ω. Characterizing functions in the F（p, q, s） space is a work of consi...LetΩ be a bounded symmetric domain in Cn. The purpose of this article is to define and characterize the general function space F（p, q, s） on Ω. Characterizing functions in the F（p, q, s） space is a work of considerable interest nowadays. In this article, the authors give several equivalent descriptions of the functions in the F（p, q, s） space on Ω in terms of fractional differential operators. At the same time, the authors give the relationship between F（p, q, s） space and Bloch type space on Ω too.展开更多
文摘Space was once a distant dream for African nations like Senegal.But that is changing fast.Today,space is emerging as a strategic frontier for the continent,with 22 countries including Senegal now operating national space agencies.Senegal launched its own agency,the Senegalese Space Study Agency(ASES),in March 2023.The recent inauguration of the African Space Agency’s headquarters in Cairo,Egypt,marks a new chapter in Africa’s rising ambitions beyond Earth.Tasked with coordinating national programmes,the agency seeks to drive economic and social development through space technologies while promoting scientific cooperation both within Africa and internationally.
文摘For China,at the turn of the century,how to keep the position of the space power,how to stimulate the enthusiasm of the space technicians and how to keep pace with the world space technology,all of these questions lie ahead of the Chinese people.So we may say China’s space industry now is in the key stage.If the space industry draws great attention from the central government and the people of the country,it will have a brilliant future in the 21st century.We should put our eyes on the 21st century and prepare to explore space resources.It is difficult for us to keep pace with the times if we do not explore space resources and try to earn "the money in space".
文摘The core module of China’s Space Station(CSS)is scheduled to be launched around the end of 2020,and the experimental module I and II will be launched in the next two years.After on-orbit constructions,CSS will be transferred into an operation period over 10 years(2022–2032 and beyond)to continuously implement space science missions.At present,based on the project selection and research work in the ground development period of CSS,China is systematically making a utilization mission planning for the operation period,which focuses on the fields of aerospace medicine and human research,space life science and biotechnology,microgravity fluid physics,combustion science,materials science,fundamental physics,space astronomy and astrophysics,Earth science,space physics and space environment,space application technology,etc.In combination with the latest development trend of space science and technology,China will continue to update planning for science research and technology development,carry out project cultivation,payload R&D,and upgrade onboard and ground experiment supporting systems to achieve greater comprehensive benefits in science,technology,economy,and society。
文摘China scheduled to complete the assembly of the T-shaped Tiangong Space Station in 2022,and will enter a new stage of utilization.There are more than 20 experiment racks inside the modules,and more than 50 external onboard payloads mounting spaces,which will support large-scale science and technology experiments during the operation.The development of internal experiment racks and external research accommodations approved during the construction has been completed,of which 4 racks in Tianhe core module,including High Microgravity Level research Rack(HMLR)and Container-less Materials Processing Rack(CMPR),have finished on-orbit tests;while other racks in Wentian and Mengtian experiment modules are under comprehensive ground tests.The Chinese Space Survey Telescope(CSST)has advanced much in the last two years with 24 pre-launch research projects funded and 4 joint science center built in preparation for CSST’s future scientific observations and operations.The systematic research planning for China’s Space Station(CSS)during 2022-2032 is updated with the researches classified into four important areas:space life sciences and human research,microgravity physical sciences,space astronomy and Earth science,and new space technologies and applications.According to the planning,more than 1000 experiments are expected to perform in CSS during the operating period.Overall,the CSS utilization missions are proceeding as planned,which will contribute to the major scientific or application output and have a positive impact on the quality of life on Earth.
文摘In 1993, China Aerospace Corporation(CASC) announced that it would give priority to the development of satellites and their applications, automobiles and components, computers and their applications, and regard them as its three-pillar industries, which was "a historic and significant strategic decision" said Mr. Liu Jiyuan, the president of CASC. New and
文摘Now the China National Astronau-tics Industry Corporation is devcting more efforts to narrowing the gaps and has also begun research into manned satellites,which it hopes will be real-ized by the end of this century.
文摘Entering into the 1990s, Chinese scientists have made mice, drosophila and silkworm eggs experiments in space with satellites and achieved remarkable results. These animals were put in space environment units with the ability of adjusting pressure, temperature and moisture control, air conditioning and purifying as well as foods and water supply. After 8-days’ flight, all performance parameters were normal and met the design requirements. The two mice kept alive for 5 days and 10 hours
文摘China’s space cause is based on the development of missile technology. In the 1950s, new China, which was just founded, decided to keep pace with the jet technology times, to begin developing missile and rocket science and technology, and to establish China’s new space scientific and technological industry.
基金Supported by the National Natural Science Foundation of China(Grant No.12571507)。
文摘U_(S)-admitting spaces,which were introduced by Heckmann,enjoy many nice properties similar to those of the extensively studied well-filtered spaces.In this paper,we present a direct construction of the U_(S)-admitting reflections by using U_(S)-admitting determined sets.
文摘The family of spaces F(p,q,s)was introduced by the author in 1996.Since then,there has been great development in the theory of these spaces,due to the fact that these spaces include many classical function spaces,and have connections with many other areas of mathematics.In this survey we present some basic properties and recent results on F(p,q,s)spaces.
基金Project supported by the Open Project Funds for the Key Laboratory of Space Photoelectric Detection and Perception(Nanjing University of Aeronautics and Astronautics),the Ministry of Industry and Information Technology of China(Grant No.NJ2022025-7)the Fundamental Research Funds for the Central Universities(Grant No.NJ2022025).
文摘With the development of China’s crewed space mission,the space radiation risk for astronauts is increasingly prominent.This paper describes a simulation of the radiation doses experienced by a Chinese female voxel phantom on board the Chinese Space Station(CSS)performed using the Monte Carlo N-Particle(MCNP)software.The absorbed dose,equivalent dose,and effective dose experienced by the voxel phantom and its critical organs are discussed for different levels of shielding of the Tianhe core module.The risk of space-radiation exposure is then assessed by comparing these doses with the current risk limits in China(the skin dose limit for short-term low-earth-orbit missions)and the NASA figures(National Council on Radiation Protection and Measurements Report No.98)for female astronauts.The results obtained can be used to guide and optimize the radiation protection provided for manned space missions.
文摘We demonstrate the transmission of 2.5-Gb/s WDM signals spaced at 5 GHz over 480 km of single-mode fiber. The results indicate that it should be possible to transmit more than one thousand 2.5-Gb/s channels spaced at 5 GHz over long distance.
文摘October 8, 1956 An institute on missile and rocket research is set up, the first of the country. July 19,1964 A biological rocket carrying albino rats is
文摘China＇s space industry has been developed quickly and consistently setting new records for mankind in space exploration in the past 60 years. Four principles are uphetd during its development. Systems engineering and overall thinking have played an important role in the development of China＇s space industry. What＇s more, the concept of systems engineering which originated from the space industry, being rooted in society, is a successful example of ＂Chinese theory＂ answering ＂Chinese question＂ and ＂Chinese wisdom＂ guiding ＂Chinese development＂, which is a trump card for the country and provides a unique business governance mode with Chinese characteristics.
文摘Services: Professional deep treatment of men's faces Treating men's "beer bellies" Spa hydrotherapy Brand new French Darphin top-class aromatherapy Spa herbal massage Treatment for men's reproductive
文摘Services: Professional deep treatment of men's laces Treating men's "heer bellies" Spa hydrotherapy Brand-new French Darphin top-class aromatherapy Spa herbal massage Treatment for men's reproductive
基金supported by the National Natural Science Foundation of China(11571104)the Hunan Provincial Innovation Foundation for Postgraduate(CX2017B220)Supported by the Construct Program of the Key Discipline in Hunan Province
文摘LetΩ be a bounded symmetric domain in Cn. The purpose of this article is to define and characterize the general function space F（p, q, s） on Ω. Characterizing functions in the F（p, q, s） space is a work of considerable interest nowadays. In this article, the authors give several equivalent descriptions of the functions in the F（p, q, s） space on Ω in terms of fractional differential operators. At the same time, the authors give the relationship between F（p, q, s） space and Bloch type space on Ω too.
